#!/usr/bin/env python3

import sys

def run(argv):
    #  if len(argv) < 4:
        #  raise NameError("参数不对....")
    assert not len(argv) < 4, "参数不对..."
    print("run....")

def check(argv):
    run(argv)
    print("check....")

def main(argv):
    check(argv)
    print("main....")

if __name__ == "__main__":
    input()
    main(sys.argv)
